'use strict'

const path = require('path') // 添加这行
const fs = require('fs')
const { exec } = require('child_process')
const https = require('https')
const crypto = require('crypto')
import { app, protocol, BrowserWindow, Menu, ipcMain, dialog, shell } from 'electron'
import { createProtocol } from 'vue-cli-plugin-electron-builder/lib'
const isDevelopment = process.env.NODE_ENV !== 'production'

ipcMain.handle('open-external-link', (event, url) => {
  shell.openExternal(url)
})


// Scheme must be registered before the app is ready
protocol.registerSchemesAsPrivileged([
  { scheme: 'app', privileges: { secure: true, standard: true } }
])

let win
let downloadSession // 存储下载会话引用
let mainWindow
async function createWindow() {
  // Create the browser window.
  const win = mainWindow = new BrowserWindow({
    show: false,
    width: 1000,
    height: 700,
    resizable: false, // 禁止调整窗口大小
    maximizable: false, // 禁止最大化
    fullscreenable: false, // 禁止全屏
    webPreferences: {

      // Use pluginOptions.nodeIntegration, leave this alone
      // See nklayman.github.io/vue-cli-plugin-electron-builder/guide/security.html#node-integration for more info
      nodeIntegration: process.env.ELECTRON_NODE_INTEGRATION,
      contextIsolation: !process.env.ELECTRON_NODE_INTEGRATION
    }
  })
  mainWindow.once('ready-to-show', () => mainWindow.show())



  // 监听窗口关闭事件
  win.on('close', (e) => {
    // 向渲染进程发送确认关闭的消息
    win.webContents.send('confirm-close')
    // 阻止默认关闭行为
    e.preventDefault()
  })

  // 接收渲染进程的关闭确认
  ipcMain.on('allow-close', () => {
    win.destroy()
  })

  ipcMain.on('cancel-close', () => {
    console.log('用户取消了关闭操作')
  })



  Menu.setApplicationMenu(null)
  // win.loadURL('https://www.baidu.com');

  if (process.env.WEBPACK_DEV_SERVER_URL) {
    // Load the url of the dev server if in development mode
    await win.loadURL(process.env.WEBPACK_DEV_SERVER_URL)
    if (!process.env.IS_TEST) win.webContents.openDevTools()
  } else {
    createProtocol('app')
    // Load the index.html when not in development
    win.loadURL('app://./index.html')
  }
}


ipcMain.handle('download-and-run', async (event, { url, filename }) => {
  try {
    // 1. 生成唯一文件名
    const uniqueFilename = generateUniqueFilename(filename)
    const downloadsPath = app.getPath('temp') // 使用临时目录
    const filePath = path.join(downloadsPath, uniqueFilename)

    // 2. 确保目录存在
    ensureDirectoryExists(downloadsPath)

    // 3. 检查并删除可能存在的临时文件
    await cleanupOldDownloads(downloadsPath, filename)

    // 4. 下载文件
    await downloadFile(url, filePath, (progress) => {
      mainWindow.webContents.send('download-progress', progress)
    })

    // 5. 验证下载
    if (!fs.existsSync(filePath)) {
      throw new Error('文件下载失败')
    }

    // 6. 安全打开文件
    const result = await shell.openPath(filePath)
    if (result !== '') {
      throw new Error(`打开文件失败: ${result}`)
    }

    return { success: true, path: filePath }
  } catch (error) {
    console.error('下载错误详情:', error)
    throw error
  }
})

// 生成唯一文件名 (包含时间戳和随机字符串)
function generateUniqueFilename(originalName) {
  const ext = path.extname(originalName)
  const name = path.basename(originalName, ext)
  const timestamp = Date.now()
  const randomStr = crypto.randomBytes(4).toString('hex')
  return `${name}_${timestamp}_${randomStr}${ext}`
}

// 清理旧的下载文件
async function cleanupOldDownloads(dir, filenamePrefix) {
  try {
    const files = fs.readdirSync(dir)
    files.forEach(file => {
      if (file.startsWith(path.basename(filenamePrefix, path.extname(filenamePrefix)))) {
        const fullPath = path.join(dir, file)
        try {
          fs.unlinkSync(fullPath)
        } catch (unlinkErr) {
          console.warn(`无法删除旧文件 ${fullPath}:`, unlinkErr)
        }
      }
    })
  } catch (err) {
    console.warn('清理旧下载文件失败:', err)
  }
}

// 确保目录存在
function ensureDirectoryExists(dirPath) {
  if (!fs.existsSync(dirPath)) {
    fs.mkdirSync(dirPath, { recursive: true })
  }
}

// 安全下载文件
async function downloadFile(url, filePath, progressCallback) {
  return new Promise((resolve, reject) => {
    const protocol = url.startsWith('https') ? require('https') : require('http')
    const file = fs.createWriteStream(filePath, { flags: 'wx' }) // 独占模式创建文件

    const request = protocol.get(url, (response) => {
      // ...之前的下载进度逻辑...
    })

    request.on('error', (err) => {
      fs.unlink(filePath, () => reject(err))
    })

    file.on('finish', () => {
      file.close(resolve)
    })

    file.on('error', (err) => {
      if (err.code === 'EEXIST') {
        // 理论上不应该发生，因为使用了wx标志
        reject(new Error(`文件已存在: ${filePath}`))
      } else {
        fs.unlink(filePath, () => reject(err))
      }
    })
  })
}


// Quit when all windows are closed.
app.on('window-all-closed', () => {
  // On macOS it is common for applications and their menu bar
  // to stay active until the user quits explicitly with Cmd + Q
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', () => {
  // On macOS it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (BrowserWindow.getAllWindows().length === 0) createWindow()
})

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', async () => {
  if (isDevelopment && !process.env.IS_TEST) {
    // Install Vue Devtools
    try {
      // await installExtension(VUEJS_DEVTOOLS)
    } catch (e) {
      console.error('Vue Devtools failed to install:', e.toString())
    }
  }
  createWindow()
})

// Exit cleanly on request from parent process in development mode.
if (isDevelopment) {
  if (process.platform === 'win32') {
    process.on('message', (data) => {
      if (data === 'graceful-exit') {
        app.quit()
      }
    })
  } else {
    process.on('SIGTERM', () => {
      app.quit()
    })
  }
}


// 在主进程 (electron main.js) 中


